The TMMS & VoIP System Designer is responsible for the design, engineering, integration, testing, and maintenance support of Telecommunications Maintenance Management Systems (TMMS) and Voice over Internet Protocol (VoIP) systems for railway, metro, airport, and infrastructure projects. The role ensures reliable communication, centralized monitoring, fault management, and maintenance of telecom systems in compliance with project specifications and industry standards. Suitable for Railway, Metro, Airport, Data Centre, and Critical Infrastructure Telecommunication Projects.

Key Responsibilities -TMMS Design & Engineering

Develop Telecom Maintenance Management System architecture and design.
Define monitoring and control requirements for telecom subsystems.
Design interfaces between TMMS and telecom systems, including:
CCTV
PA/PIDS
Telephone Systems
Radio Systems
Transmission Networks
Access Control Systems
Network Equipment
UPS Systems
Develop alarm management and event logging functionalities.
Configure SNMP-based network monitoring and management solutions.




Prepare telecom asset management databases and maintenance workflows.
VoIP System Design

Design IP-based telephony architecture and network topology.
Define SIP-based communication requirements.
Configure and integrate:
IP-PBX Systems
SIP Servers
Media Gateways
VoIP Phones
Softphones
Voice Recording Systems
Develop dial plans, numbering schemes, and call routing strategies.
Ensure interoperability with legacy telephone systems and emergency communication systems.
Integration & Interface Management

Coordinate with signalling, SCADA, AFC, ICT, and telecom teams.
Define interface requirements between TMMS, VoIP, and other railway systems.
Support integration activities during system implementation and commissioning.
Resolve communication and network interoperability issues.

Testing & Commissioning

Prepare Factory Acceptance Test (FAT) procedures.
Support Site Acceptance Testing (SAT).
Conduct functionality, pe

📌 Engineering Manager (Faridabad)
🏢 Larsen and Toubro
📍 Faridabad